l I V I I GM04 255 I 1 080885 9 1 1 21 1 9 s I 1 1 I 1 I 1 I 1 S 1 E l P Yu J 1 2 1 q I 1 1 V a 1 1 KKK mN g 17 I I 1 Q Q 19 12 1 16 agQ I3 xx I zz gy J 1 I 14 I 5 1 I I I I I I H5 8 I I 8 4 I 5 7 33 25 1 1 1 1 gi 1 O 26 l 1 I 31 I 27 I 1 8 x 28 8 1 8 1 32 I Q 1 1 3 I xx J 6 I I 29 8 8 I 1 1 1 V I 10 II DM5189E121 1 I I 1 I GM04 255 I 1985 1987 N BRAKE BOOSTERNACUUM DUAL DIAPH RAGMIIMORAINE NOTE SEE CHART IN GROUP FOR USAGE V 1 1 N S BOOT 1 2 7 I I 1 8 I 2 N S SILENCER 1 2 4 Q 3 N S VALVE VACUUM CHECK 1 2 3 4 N S GROMMET 1 2 3 I 5 N S SWITCH VACUUM SOME MODELS 1 2 5 I 8 I 6 N S GROMMET 1 2 5 1 8 1 8 7 N S SEAL FRT I OUS NG 1 2 L 8 8 N S BEARING PRIM P STON 1 2 A 9 N S HOUSING RR 1 V 10 N S HOUSING FRT 1 1 1 N S SPRING RETURN 1 1 I 12 4 924 ROD VAC PWR BOOS P STON 1 8 13 N S RETAINER REACT ON 1 A 14 N S SILENCER POWER HEAD 1 2 4 I 1 15 N S RETAINER DIAPHRAGM 1 2 16 N S DIAPHRAGM PRIM 1 2 I 17 N S PLATE PRIM SUPPORT 1 18 N S BEARING PISTON SECD 1 2 I 19 N S DIVIDER HOUS NG 1 20 N S DIAPHRAGM SECD 1 2 8 8 21 N S PLATE SUPPORT SECD 1 22 N S DISC REACTION 1 2 6 1 23 N S PISTON REACTION I 6 24 N S RETAINER BODY REACT ON 1 4 6 F 25 N S BODY REACTION 1 6 I 26 N S SPRING AIR VALVE 1 4 27 N S BUMPER REACTION 1 2 4 I 28 N S RING RETA NING 1 2 4 I 1991 GENERAL MOTORS SERVICE PARTS OPERATIONVS PONTIAC 22N 4 000 GROUP I I 1 4 10 2 91 8